Home
О нас
Products
Services
Регистрация
Войти
Поиск
krista20001
@krista20001
July 2022
1
5
Report
Срочно РЕШИТЬ НЕРАВЕНСТВО И УРАВНЕНИЕ !!!!!!
Please enter comments
Please enter your name.
Please enter the correct email address.
Agree to
terms of service
You must agree before submitting.
Send
Answers & Comments
avilov41
Решение:√2cos^7x-cos7x=0;
cos7x(√2cos7x-1)=0;
cos7x=0, 7x=π/2+πn,x=π/14+πn/7, n∈z.
√2cos7x-1=0, cos7x=√2/2, 7x=+-π/4+2πn, x=+-π/28+2πn/7,n∈z.
2)Решить неравенство cos^2x<3/4.
Решение cos^2x=(1+cos2x)/2,поэтому (1+cos2x)/2<3/4 или cos2x<1/2,
π/3+2πn<2x<5π/3+2πn,n∈z, окончательно π/6+πn<x<5π/6+πn,n∈z
0 votes
Thanks 0
More Questions From This User
See All
krista20001
August 2022 | 0 Ответы
reshit metodom vydeleniya polnogo kvadrata h2 8h u120
Answer
krista20001
August 2022 | 0 Ответы
pomogite pozhalujsta biologiya8724208bf9990262cc8408cde138f433 46091
Answer
krista20001
August 2022 | 0 Ответы
v ravnobedrennom treugolnike bokovaya storona ravna 8 sm a osnovanie 12 sm cher
Answer
krista20001
August 2022 | 0 Ответы
najdite oblast dopustimyh znachenij argumenta funkcii ykoren iz 3 5x 2x2
Answer
krista20001
July 2022 | 0 Ответы
svyaz mezhdu koordinatami vektorov i koordinatami tochek
Answer
krista20001
July 2022 | 0 Ответы
ochen srochno nado pomogite algebra
Answer
krista20001
July 2022 | 0 Ответы
pomogite s alegebroj ochen nado 2 zadaniya
Answer
krista20001
July 2022 | 0 Ответы
pomogite pozhalujstab7e6be99367bcf5b60f41bb110324491 88843
Answer
krista20001
July 2022 | 0 Ответы
pomogite pozhalujsta ochen nuzhno uravneniya po algebre
Answer
krista20001
July 2022 | 0 Ответы
pust a mnozhestvo prostyh chisleno vida 7n2 gde nprinadlezhitn verna li zapis
Answer
рекомендуемые вопросы
rarrrrrrrr
August 2022 | 0 Ответы
o chem dolzhny pozabotitsya v pervuyu ochered vzroslye pri organizacionnom vyvoze n
danilarsentev
August 2022 | 0 Ответы
est dva stanka na kotoryh vypuskayut odinakovye zapchasti odin proizvodit a zapcha
myachina8
August 2022 | 0 Ответы
najti po grafiku otnoshenie v3v1 v otvetah napisano 9 no nuzhno reshenie
ydpmn7cn6w
August 2022 | 0 Ответы
Choose the correct preposition: 1.I am fond (out,of,from) literature. 2.where ar...
millermilena658
August 2022 | 0 Ответы
opredelite kak sozdavalas i kto sozdaval arabskoe gosudarstvo v kracii
MrZooM222
August 2022 | 0 Ответы
ch ajtmanov v rasskaze krasnoe yabloko ispolzuet metod rasskaz v rasskaze opi
timobila47
August 2022 | 0 Ответы
kakovo bylo naznachenie kazhdoj iz chastej vizantijskogo hrama pomogite pozhalujsta
ivanyyaremkiv
August 2022 | 0 Ответы
moment. 6....
pozhalujsta8b98a56c0152a07b8f4cbcd89aa2f01e 97513
sarvinozwakirjanova
August 2022 | 0 Ответы
pomogite pozhalusto pzha519d7eb8246a08ab0df06cc59e9dedb 6631
×
Report "Срочно РЕШИТЬ НЕРАВЕНСТВО И УРАВНЕНИЕ !!!!!!..."
Your name
Email
Reason
-Select Reason-
Pornographic
Defamatory
Illegal/Unlawful
Spam
Other Terms Of Service Violation
File a copyright complaint
Description
Helpful Links
О нас
Политика конфиденциальности
Правила и условия
Copyright
Контакты
Helpful Social
Get monthly updates
Submit
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
cos7x(√2cos7x-1)=0;
cos7x=0, 7x=π/2+πn,x=π/14+πn/7, n∈z.
√2cos7x-1=0, cos7x=√2/2, 7x=+-π/4+2πn, x=+-π/28+2πn/7,n∈z.
2)Решить неравенство cos^2x<3/4.
Решение cos^2x=(1+cos2x)/2,поэтому (1+cos2x)/2<3/4 или cos2x<1/2,
π/3+2πn<2x<5π/3+2πn,n∈z, окончательно π/6+πn<x<5π/6+πn,n∈z